Optimal Switching

Design Features

The Optimal Switching (OSW) application is designed to generate recommended switch plans to reconfigure a distribution system in order to meet a specified optimization objective with regards to operation.

Optimal Switching meets specified optimization objectives:

  • Minimum losses: minimize the network power loss for the current or a selected network loading condition by reconfiguring the available switch operations.
  • Minimum feeder voltage drops: achieve the flattest voltage profile while maintaining the lowest end-of-line voltage still within operating limits.
  • Phase balancing: provide a switching plan to switch individual phases in order to shift the normally open point per phase in order to balance the phases.
  • Load Balancing: provide a switching plan to balance the load equally between feeders within the area of analysis.

For each objective, the optimal solution is obtained while enforcing the following operational constraints:

  • Respect operating limits of feeder voltages.
  • Respect operating limits of branch device currents.
  • Operating limits of transformer voltages and currents.
  • No interruption of customer loads.
  • No loss of customer loads.
  • Minimum number of switch operations
  • Minimum number of ineffective switch operations
  • In-rush current for cold load pick up.

The available switching devices that are studied include feeder line switches, tie-switches, breakers as well as reclosers. The Optimal Switching application also advises the user of any possible loop conditions.

More Information

For more information call 800.831.7223 or contact This email address is being protected from spambots. You need JavaScript enabled to view it.